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add visit count to abandoned to limit list length

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daan 2020-01-25 12:26:08 -08:00
parent 072ceb2efe
commit 5e32d00aab
3 changed files with 47 additions and 23 deletions
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6
include/mimalloc-types.h
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@ -241,10 +241,12 @@ typedef struct mi_segment_s {
bool mem_is_committed; // `true` if the whole segment is eagerly committed
// segment fields
struct mi_segment_s* next; // must be the first segment field -- see `segment.c:segment_alloc`
struct mi_segment_s* next; // must be the first segment field -- see `segment.c:segment_alloc`
struct mi_segment_s* prev;
struct mi_segment_s* abandoned_next;
size_t abandoned; // abandoned pages (i.e. the original owning thread stopped) (`abandoned <= used`)
size_t abandoned; // abandoned pages (i.e. the original owning thread stopped) (`abandoned <= used`)
size_t abandoned_visits; // count how often this segment is visited in the abandoned list (to force reclaim it it is too long)
size_t used; // count of pages in use (`used <= capacity`)
size_t capacity; // count of available pages (`#free + used`)
size_t segment_size;// for huge pages this may be different from `MI_SEGMENT_SIZE`